"""
OGR Buffer process

Author: Jachym Cepicky (jachym@les-ejk.cz) 
"""

import os
import sys
os.environ["GISBASE"] = "/usr/lib/grass64"
gbase = os.getenv("GISBASE") 

pypath = os.path.join(gbase,'etc','gui','wxpython','gui_modules')

sys.path.append(pypath)
os.environ["PYTHONPATH"] = "/usr/local/grass-7.0.svn/etc/python"
pypath = os.path.join(gbase,'etc','python')

sys.path.append(pypath)

cpath =  os.getenv("PATH")
path = cpath + ":" + gbase + "/bin" + ":" + gbase + "/scripts" 
os.environ["PATH"]=path

lpath = os.getenv("LD_LIBRARY_PATH")
if lpath!=None:
    libpath = lpath + ":" + gbase + "/lib"
else:
    libpath =  gbase + "/lib"
os.environ["LD_LIBRARY_PATH"]=libpath
#os.environ["GIS_LOCK"]="$$"
os.environ["GISRC"]="/opt/grass-lite/grassrc"

os.system("export LOCATION_NAME=spearfish60")

from grass.script import core as grass
from pywps.Process import WPSProcess                                
from osgeo import ogr



class Process(WPSProcess):

    def __init__(self):

        ##
        # Process initialization
        WPSProcess.__init__(self,
            identifier = "ogrbuffer",
            title="Geotiff to PNG conversion",
            version = "1.0",
            grassLocation = True,
            storeSupported = True,
            statusSupported = True)
      
        
        self.outputImage=self.addComplexOutput(identifier="output",title="output image",formats=[{'mimeType':'image/png'}])
       
        
    def execute(self):
        #r.external links an external raster file into a GRASS map layer
        self.cmd("g.gisenv set=LOCATION_NAME=spearfish60")
        self.cmd(['r.external', 'input=/home/rashad/rr.tif', 'output=inputImage','-o' ])
        self.cmd(['g.region',"rast=inputImage"])
        self.cmd(["r.out.png","input=inputImage","output=./tmp.png"])
        self.outputImage.setValue("./tmp.png")